微调：当选择的项目保持不变时，onItemSelected不会被调用(Spinner : onItemSelected not called when selected item remains th

微调：当选择的项目保持不变时，onItemSelected不会被调用(Spinner : onItemSelected not called when selected item remains the same)

我的Spinner有一个OnItemSelectedListener ，但当所选项目与前一个项目相同时，它不会被调用。 显然， OnClickListener不是Spinner的选项。 每次用户点击一个项目时，我都需要抓住它。 任何想法？

也许这个Spinner在ActionBar内部的事实会干扰正常行为？

@Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.tracklist_menu, menu); Spinner spinner = (Spinner) menu.findItem(R.id.option_ordering_spinner) .getActionView(); spinner.setAdapter(mSpinnerAdapter); spinner.setSelection(PrefsHelper.getOrderingSpinnerPos(prefs)); spinner.setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { String str = "selected"; System.out.println(str); if (optionMenuInitialized) { switch (position) { case 0: // rdm getActivity() .sendBroadcast( new Intent( MyIntentAction.DO_RESHUFFLE_PLAYLIST)); smp.setCurrentTracklistCursorPos(-1); trackAdapter.notifyDataSetChanged(); break; case 1: // artist getActivity() .sendBroadcast( new Intent( MyIntentAction.DO_ORDER_PLAYLIST_BY_ARTIST)); smp.setCurrentTracklistCursorPos(-1); trackAdapter.notifyDataSetChanged(); break; case 2: // folder getActivity() .sendBroadcast( new Intent( MyIntentAction.DO_ORDER_PLAYLIST_BY_FOLDER)); smp.setCurrentTracklistCursorPos(-1); trackAdapter.notifyDataSetChanged(); break; } PrefsHelper.setOrderingSpinnerPos(prefEditor, position); prefEditor.commit(); } optionMenuInitialized = true; } @Override public void onNothingSelected(AdapterView<?> parent) { } }); }

I have a OnItemSelectedListener for my Spinner, but it is not called when the selected item is the same as the previous one. Apparently the OnClickListener is not an option for a Spinner. I need to catch everytime a user click on an item. Any idea?

Maybe the fact that this Spinner is inside the ActionBar disturbs normal behavior?

@Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { inflater.inflate(R.menu.tracklist_menu, menu); Spinner spinner = (Spinner) menu.findItem(R.id.option_ordering_spinner) .getActionView(); spinner.setAdapter(mSpinnerAdapter); spinner.setSelection(PrefsHelper.getOrderingSpinnerPos(prefs)); spinner.setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { String str = "selected"; System.out.println(str); if (optionMenuInitialized) { switch (position) { case 0: // rdm getActivity() .sendBroadcast( new Intent( MyIntentAction.DO_RESHUFFLE_PLAYLIST)); smp.setCurrentTracklistCursorPos(-1); trackAdapter.notifyDataSetChanged(); break; case 1: // artist getActivity() .sendBroadcast( new Intent( MyIntentAction.DO_ORDER_PLAYLIST_BY_ARTIST)); smp.setCurrentTracklistCursorPos(-1); trackAdapter.notifyDataSetChanged(); break; case 2: // folder getActivity() .sendBroadcast( new Intent( MyIntentAction.DO_ORDER_PLAYLIST_BY_FOLDER)); smp.setCurrentTracklistCursorPos(-1); trackAdapter.notifyDataSetChanged(); break; } PrefsHelper.setOrderingSpinnerPos(prefEditor, position); prefEditor.commit(); } optionMenuInitialized = true; } @Override public void onNothingSelected(AdapterView<?> parent) { } }); }

最满意答案

好吧，我终于找到了一个解决方案，通过创建我自己的类扩展了Spinner：

public class MySpinner extends Spinner { OnItemSelectedListener listener; public MySpinner(Context context, AttributeSet attrs) { super(context, attrs); } @Override public void setSelection(int position) { super.setSelection(position); if (listener != null) listener.onItemSelected(null, null, position, 0); } public void setOnItemSelectedEvenIfUnchangedListener( OnItemSelectedListener listener) { this.listener = listener; } }

Ok, I finally found a solution, by creating my own class extending Spinner :

public class MySpinner extends Spinner { OnItemSelectedListener listener; public MySpinner(Context context, AttributeSet attrs) { super(context, attrs); } @Override public void setSelection(int position) { super.setSelection(position); if (listener != null) listener.onItemSelected(null, null, position, 0); } public void setOnItemSelectedEvenIfUnchangedListener( OnItemSelectedListener listener) { this.listener = listener; } }